Electrical connecting socket



FIG. 1 is a front elevation view of an electrical connecting socket showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is an isometric view thereof.

The broken lines in the drawings depict environmental structure, which forms no part of the claimed design. 

The ornamental design for an electrical connecting socket, as shown and described. 